Last update: January 2022 Digital formats: PDF, EPUB (no DRM) Print length: 512 pages ISBN: 978-1907117091 Technical reviewers: Emily Stark and Matt Caswell You are about to undertake a journey into the mysterious world of cryptography. If you are like me, and you find the experience equal parts challenging and rewarding, you may stay on this journey long after you finish reading this book. I am w